AD NUMBER: 2011-12-05

SUMMARY: We are adopting a new airworthiness
directive (AD) for the products listed above. This AD requires
replacing the existing unshielded fuel quantity indication system
(FQIS) wire bundles with double shielded FQIS wire bundles,
installing a new wire feed-through fitting, and grounding the wire
shields, as applicable; and doing repetitive low frequency eddy
current (LFEC) inspections for cracking of the fuselage skin, and
corrective actions if necessary. This AD also requires revising the
maintenance program to incorporate certain airworthiness
limitations. This AD was prompted by fuel system reviews conducted
by the manufacturer. We are issuing this AD to increase the level
of protection from lightning strikes and prevent the potential of
ignition sources inside fuel tanks, which, in combination with
flammable fuel vapors, could result in fuel tank explosions and
consequent loss of the airplane.